US906854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reducing metallic oxids.
Assignee: Electro Metallurgical Co USA
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Filing: 1906-06-19
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Granted: 1908-12-15
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Expires: 1926-06-19
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Becket
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:38
CPC Classifications
C; C21; C21C; C21C7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1911-12-15 | 1912-06-15 | 1912-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-12-15 | 1916-06-15 | 1916-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-12-15 | 1920-06-15 | 1920-12-15 | $7700.00 | Window Closed / Lapsed |